TWI566021B - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
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- TWI566021B TWI566021B TW105100174A TW105100174A TWI566021B TW I566021 B TWI566021 B TW I566021B TW 105100174 A TW105100174 A TW 105100174A TW 105100174 A TW105100174 A TW 105100174A TW I566021 B TWI566021 B TW I566021B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133738—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homogeneous alignment
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0252—Improving the response speed
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/16—Determination of a pixel data signal depending on the signal applied in the previous frame
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
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- Multimedia (AREA)
Description
本發明關於一種顯示面板,特別關於一種液晶顯示面板。 The present invention relates to a display panel, and more particularly to a liquid crystal display panel.
隨著科技的進步,平面顯示裝置已經廣泛的被運用在各種領域,尤其是液晶顯示裝置,因具有體型輕薄、低功率消耗及無輻射等優越特性,已經漸漸地取代傳統陰極射線管顯示裝置,而應用至許多種類之電子產品中,例如行動電話、可攜式多媒體裝置、筆記型電腦、液晶電視及液晶螢幕等等。 With the advancement of technology, flat display devices have been widely used in various fields, especially liquid crystal display devices. Due to their superior characteristics such as slimness, low power consumption and no radiation, they have gradually replaced traditional cathode ray tube display devices. It is applied to many kinds of electronic products, such as mobile phones, portable multimedia devices, notebook computers, LCD TVs and LCD screens.
液晶顯示裝置的相關應用產品已成為家庭中必備的用品之一,例如液晶電視(LCD TV),不單是面板的尺寸變大,更須滿足人類視覺感官於影像品質上更為嚴苛的要求,因此,對於動態影像呈現所需的技術為各廠極力發展的重點之一。 The related applications of liquid crystal display devices have become one of the must-have items in the home, such as LCD TVs, not only the size of the panels has become larger, but also the more stringent requirements for human visual senses in image quality. Therefore, the technology required for dynamic image presentation is one of the focuses of the development of each factory.
於習知技術中,為了改善液晶顯示裝置動態影像殘影(blur)問題,一般係透過加快液晶反應速度來達成(亦即減少液晶分子的切換時間(Switching Time))。目前對於加快液晶反應速度方面常用的方法是採用一種稱為過驅動(Overdrive)的技術,其主要的原理是透過提高畫素的驅動電壓來加快液晶分子的轉動速度,進而改善移動影像的顯示品質。 In the prior art, in order to improve the dynamic image blurring problem of a liquid crystal display device, it is generally achieved by speeding up the liquid crystal reaction speed (that is, reducing the switching time of the liquid crystal molecules). At present, a commonly used method for accelerating the liquid crystal reaction speed is to adopt a technique called overdrive, whose main principle is to accelerate the rotation speed of liquid crystal molecules by increasing the driving voltage of the pixels, thereby improving the display quality of the moving image. .
然而,於習知一種畫素設計中,係讓畫素電極的長軸方向與液晶的配向方向之間形成一角度(該角度可稱為預扭角度(Pretwist Angle)),但在這種電極的設計中,若以延伸過驅動技術(extended overdrive)驅動畫素且當驅動電壓超過畫素的最大穿透率電壓(最大穿透率電壓即為畫素的穿透率(transmittance)最大時的驅動電壓,或稱為White Voltage)時,會有額外的暗紋(Disclination)產生而使顯示面板的穿透率下降。 However, in a conventional pixel design, an angle is formed between the long axis direction of the pixel electrode and the alignment direction of the liquid crystal (this angle may be referred to as a pretwist angle), but at the electrode In the design, if the pixel is driven by extended overdrive and the driving voltage exceeds the maximum transmittance voltage of the pixel (the maximum transmittance voltage is the maximum transmittance of the pixel). When the driving voltage, or White Voltage, is applied, additional darkening occurs and the transmittance of the display panel is lowered.
本發明之目的為提供一種液晶顯示面板,可在不降低穿透率 的情況下加快液晶分子的反應速度而降低切換時間,進而改善動態殘影問題而提高顯示品質。 The object of the present invention is to provide a liquid crystal display panel without reducing the transmittance In this case, the reaction speed of the liquid crystal molecules is accelerated, and the switching time is lowered, thereby improving the dynamic image sticking problem and improving the display quality.
為達上述目的,依據本發明之一種液晶顯示面板,包括一第一基板、一第二基板、一液晶層、一第一電極以及一配向層。液晶層設置於第一基板與第二基板之間。第一電極設置於第一基板上,並包含往一第一方向延伸之至少一第一電極部,且第一電極為一線對稱結構並具有一對稱軸。配向層設置於第一電極上,第一電極之對稱軸與配向層之一配向方向之間的夾角係小於等於2度。 To achieve the above objective, a liquid crystal display panel according to the present invention includes a first substrate, a second substrate, a liquid crystal layer, a first electrode, and an alignment layer. The liquid crystal layer is disposed between the first substrate and the second substrate. The first electrode is disposed on the first substrate and includes at least one first electrode portion extending in a first direction, and the first electrode has a line symmetrical structure and has an axis of symmetry. The alignment layer is disposed on the first electrode, and an angle between the axis of symmetry of the first electrode and one of the alignment directions of the alignment layer is less than or equal to 2 degrees.
在一實施例中,第一電極為液晶顯示面板之一畫素電極或一共同電極。 In an embodiment, the first electrode is a pixel electrode or a common electrode of the liquid crystal display panel.
在一實施例中,第一電極部具有兩相對側邊,該些側邊其中之一的其中一點的切線方向與第一電極之對稱軸之間的夾角係介於0度到10度之間。 In an embodiment, the first electrode portion has two opposite sides, and an angle between a tangential direction of one of the sides and an axis of symmetry of the first electrode is between 0 and 10 degrees. .
在一實施例中,第一電極部為長條狀。 In an embodiment, the first electrode portion is elongated.
在一實施例中,液晶顯示面板係操作於一過驅動技術。 In one embodiment, the liquid crystal display panel operates in an overdrive technique.
在一實施例中,第一電極更具有與第一電極部連接之一第二電極部,一接觸孔係設置於第二電極部上,第一電極部鄰近接觸孔具有一第一寬度,第一電極部遠離接觸孔具有一第二寬度,且第一寬度大於或等於第二寬度。 In one embodiment, the first electrode further has a second electrode portion connected to the first electrode portion, a contact hole is disposed on the second electrode portion, and the first electrode portion has a first width adjacent to the contact hole, An electrode portion has a second width away from the contact hole, and the first width is greater than or equal to the second width.
在一實施例中,第一方向與配向方向之間的夾角係小於等於2度。 In an embodiment, the angle between the first direction and the alignment direction is less than or equal to 2 degrees.
在一實施例中,第一電極包含複數第一電極部及連接於該些第一電極部之一第二電極部,且第一方向與配向層之配向方向之間的夾角係介於178度與182度之間。 In one embodiment, the first electrode includes a plurality of first electrode portions and a second electrode portion connected to the first electrode portions, and an angle between the first direction and the alignment direction of the alignment layer is 178 degrees. Between 182 degrees.
在一實施例中,兩相鄰該些第一電極部鄰近第二電極部的間距小於遠離第二電極部的間距。 In an embodiment, a distance between two adjacent first electrode portions adjacent to the second electrode portion is smaller than a distance from the second electrode portion.
在一實施例中,第一基板之一法向量與液晶層之液晶分子長軸方向的夾角係大於85度且小於90度。 In one embodiment, the angle between one of the normal vectors of the first substrate and the long-axis direction of the liquid crystal molecules of the liquid crystal layer is greater than 85 degrees and less than 90 degrees.
承上所述,因本發明之一實施例之液晶顯示面板中,畫素配 置於第一基板與第二基板之間,並具有一配向層及一第一電極,而配向層設置於第一基板上,第一電極設置於第一基板上,且第一電極為線對稱結構並具有一對稱軸。另外,第一電極具有至少一往第一方向延伸之第一電極部,且第一電極的對稱軸與配向層之配向方向之間的夾角係小於等於2度。藉由畫素的電極結構以及第一電極之第一電極部與配向層之配向方向的關係,使得液晶顯示面板操作於過驅動技術,特別在一延伸過驅動(extended overdrive)技術時,畫素不會有額外的暗紋產生而使穿透率下降。因此,本發明之液晶顯示面板可在不降低穿透率的情況下加快液晶分子的反應速度而降低切換時間,進而改善動態殘影問題而提高顯示品質。 According to the above, in the liquid crystal display panel according to an embodiment of the present invention, the pixel is matched. And disposed between the first substrate and the second substrate, and having an alignment layer and a first electrode, wherein the alignment layer is disposed on the first substrate, the first electrode is disposed on the first substrate, and the first electrode is line symmetric The structure has an axis of symmetry. In addition, the first electrode has at least one first electrode portion extending in the first direction, and an angle between the axis of symmetry of the first electrode and the alignment direction of the alignment layer is 2 degrees or less. By the electrode structure of the pixel and the relationship between the alignment direction of the first electrode portion of the first electrode and the alignment layer, the liquid crystal display panel is operated by overdrive technology, especially in an extended overdrive technology. There is no additional dark streaks and the penetration rate is reduced. Therefore, the liquid crystal display panel of the present invention can speed up the switching speed of the liquid crystal molecules without lowering the transmittance, thereby reducing the switching time, thereby improving the dynamic image sticking problem and improving the display quality.
1、1a、3‧‧‧液晶顯示面板 1, 1a, 3‧‧‧ LCD panel
11‧‧‧第一基板 11‧‧‧First substrate
12‧‧‧第二基板 12‧‧‧second substrate
13‧‧‧液晶層 13‧‧‧Liquid layer
141、141a‧‧‧第一電極 141, 141a‧‧‧ first electrode
1411‧‧‧第一電極部 1411‧‧‧First electrode
1412‧‧‧第二電極部 1412‧‧‧Second electrode
142‧‧‧鈍化層 142‧‧‧ Passivation layer
143、143a‧‧‧第二電極 143, 143a‧‧‧ second electrode
144‧‧‧平坦層 144‧‧‧flat layer
145‧‧‧層間介電層 145‧‧‧Interlayer dielectric layer
146‧‧‧緩衝層 146‧‧‧buffer layer
147‧‧‧濾光層 147‧‧‧Filter layer
148‧‧‧保護層 148‧‧‧Protective layer
151、152‧‧‧配向層 151, 152‧‧ ‧ alignment layer
2‧‧‧液晶顯示裝置 2‧‧‧Liquid crystal display device
4‧‧‧背光模組 4‧‧‧Backlight module
A‧‧‧配向方向 A‧‧‧ alignment direction
BM‧‧‧黑色矩陣層 BM‧‧‧ black matrix layer
d1‧‧‧第一寬度 D1‧‧‧first width
d2‧‧‧第二寬度 D2‧‧‧ second width
d3、d4‧‧‧間距 D3, d4‧‧‧ spacing
D‧‧‧資料線 D‧‧‧ data line
D1‧‧‧第一方向 D1‧‧‧ first direction
D2‧‧‧第二方向 D2‧‧‧ second direction
D3‧‧‧第三方向 D3‧‧‧ third direction
D4‧‧‧液晶分子的長軸方向 D4‧‧‧ long-axis direction of liquid crystal molecules
E‧‧‧光線 E‧‧‧Light
H‧‧‧接觸孔 H‧‧‧Contact hole
L‧‧‧對稱軸 L‧‧‧ axis of symmetry
L1、L2‧‧‧側邊 L1, L2‧‧‧ side
P、Pa‧‧‧畫素 P, Pa‧‧ ‧ pixels
θ‧‧‧夾角 Θ‧‧‧ angle
圖1A為本發明較佳實施例之一種液晶顯示面板的剖視示意圖。 1A is a cross-sectional view of a liquid crystal display panel in accordance with a preferred embodiment of the present invention.
圖1B為圖1A之液晶顯示面板的第一電極的俯視示意圖。 1B is a top plan view of a first electrode of the liquid crystal display panel of FIG. 1A.
圖1C及圖1D分別為畫素於不施加驅動電壓及施加驅動電壓時,液晶分子相對於圖1B之第一電極的轉動示意圖。 1C and FIG. 1D are schematic diagrams showing the rotation of liquid crystal molecules with respect to the first electrode of FIG. 1B when no driving voltage is applied and a driving voltage is applied, respectively.
圖1E為一實施例之液晶分子的預傾示意圖。 1E is a schematic view of a pretilt of liquid crystal molecules of an embodiment.
圖2A為不同實施態樣之第一電極的示意圖。 2A is a schematic illustration of a first electrode of various embodiments.
圖2B及圖2C分別為畫素不施加驅動電壓及施加驅動電壓時,液晶分子相對於圖2A之第一電極的轉動示意圖。 2B and 2C are schematic diagrams showing the rotation of liquid crystal molecules with respect to the first electrode of FIG. 2A when no pixel is applied with a driving voltage and a driving voltage is applied.
圖3為一實施例中,畫素的驅動電壓改變時,液晶分子切換時間的示意圖。 FIG. 3 is a schematic diagram showing the switching time of liquid crystal molecules when the driving voltage of the pixel is changed in an embodiment. FIG.
圖4為本發明另一實施例之液晶顯示面板的剖視示意圖。 4 is a cross-sectional view showing a liquid crystal display panel according to another embodiment of the present invention.
圖5為本發明較佳實施例之一種液晶顯示裝置的示意圖。 FIG. 5 is a schematic diagram of a liquid crystal display device according to a preferred embodiment of the present invention.
以下將參照相關圖式,說明依本發明較佳實施例之液晶顯示面板,其中相同的元件將以相同的參照符號加以說明。本發明所有實施態樣的圖示只是示意,不代表真實尺寸與比例。此外,以下實施例的內容中所稱的方位「上」及「下」只是用來表示相對的位置關係。再者,一個元件形成在另一個元件「上」、「之上」、「下」或「之下」可包括實施例中的 一個元件與另一個元件直接接觸,或也可包括一個元件與另一個元件之間還有其他額外元件使一個元件與另一個元件無直接接觸。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a liquid crystal display panel according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. The illustrations of all the embodiments of the present invention are merely schematic and do not represent true dimensions and proportions. In addition, the orientations "upper" and "lower" as used in the following embodiments are merely used to indicate relative positional relationships. Furthermore, the "on," "above," "below," or "below" another element may be included in the embodiment. One element is in direct contact with another element, or it can be included between the other element and the other element. The other element is not in direct contact with the other element.
請參照圖1A及圖1B所示,其中,圖1A為本發明較佳實施例之一種液晶顯示面板1的剖視示意圖,而圖1B為圖1A之液晶顯示面板1的第一電極141的俯視示意圖。 1A and FIG. 1B, FIG. 1A is a cross-sectional view of a liquid crystal display panel 1 according to a preferred embodiment of the present invention, and FIG. 1B is a plan view of the first electrode 141 of the liquid crystal display panel 1 of FIG. 1A. schematic diagram.
本實施例之液晶顯示面板1可為一邊緣電場切換(Fringe Field Switching,FFS)式液晶顯示面板或一平面切換(In-plane Switch,IPS)式液晶顯示面板,或為其他水平驅動式的液晶顯示面板。於此,係以邊緣電場切換(FFS)式液晶顯示面板為例。另外,在圖示中顯示了一第一方向D1、一第二方向D2及一第三方向D3,第一方向D1、第二方向D2及第三方向D3實質上係兩兩相互垂直的方向。其中,第一方向D1與液晶顯示面板1之資料線D的延伸方向實質上平行,第二方向D2與液晶顯示面板1之掃描線(圖未顯示)的延伸方向實質上平行,而第三方向D3可為分別垂直第一方向D1與第二方向D2之另一方向。 The liquid crystal display panel 1 of the present embodiment can be a Fringe Field Switching (FFS) liquid crystal display panel or an In-plane Switch (IPS) liquid crystal display panel, or other horizontally driven liquid crystal display panels. Display panel. Here, a fringe electric field switching (FFS) type liquid crystal display panel is taken as an example. In addition, a first direction D1, a second direction D2, and a third direction D3 are shown in the drawing, and the first direction D1, the second direction D2, and the third direction D3 are substantially perpendicular to each other. The first direction D1 is substantially parallel to the extending direction of the data line D of the liquid crystal display panel 1, and the second direction D2 is substantially parallel to the extending direction of the scanning line (not shown) of the liquid crystal display panel 1, and the third direction D3 may be the other direction perpendicular to the first direction D1 and the second direction D2, respectively.
液晶顯示面板1係操作於一過驅動技術,以改善動態殘影問題而提高其顯示品質,特別當以延伸(extended)過驅動電壓驅動時,暗紋(Disclination)現象將被改善。液晶分子在達到每一種穩定狀態時都對應著一定的電壓,但當畫素的電極電壓改變時,液晶分子並不能即時轉動到目標狀態,而是在一定的響應時間後才能達到穩態,提供給液晶的電壓差越大,液晶分子轉動的速度越快(切換時間越短)。而過驅動技術即是透過一開始就提供液晶高於目標狀態的驅動電壓,使得液晶分子轉動的速度更快,從而縮短了反應時間。 The liquid crystal display panel 1 is operated by an overdrive technology to improve the dynamic image sticking problem and improve its display quality, especially when driven by an extended overdrive voltage, the phenomenon of discerning will be improved. The liquid crystal molecules correspond to a certain voltage when reaching each stable state, but when the electrode voltage of the pixel changes, the liquid crystal molecules cannot be immediately rotated to the target state, but the steady state can be achieved after a certain response time. The greater the voltage difference to the liquid crystal, the faster the liquid crystal molecules rotate (the shorter the switching time). The overdrive technology provides a driving voltage for the liquid crystal above the target state from the beginning, so that the liquid crystal molecules rotate faster, thereby shortening the reaction time.
如圖1A所示,液晶顯示面板1包括一第一基板11、一第二基板12以及一液晶層13。液晶層13夾置於第一基板11與第二基板12之間。其中,第一基板11及第二基板12為透光材質所製成,並例如為一玻璃基板、一石英基板或一塑膠基板,並不限定。另外,液晶顯示面板1更包括一個畫素陣列(未顯示),畫素陣列配置於第一基板11與第二基板12之間,且畫素陣列包含至少一畫素(或稱次畫素)P。於此,係以複數畫素P為例(圖1A只顯示一個畫素P),且該些畫素P配置成矩陣狀。另外,本 實施例之液晶顯示面板1更可包括複數掃描線(圖未顯示)與複數資料線D,該些掃描線與該些資料線D為交錯設置,並且實質上相互垂直而定義出該些畫素P的區域。如上所述,本實施例之資料線D的延伸方向實質上與第一方向D1平行,而掃描線的延伸方向實質上與第二方向D2平行。 As shown in FIG. 1A, the liquid crystal display panel 1 includes a first substrate 11, a second substrate 12, and a liquid crystal layer 13. The liquid crystal layer 13 is interposed between the first substrate 11 and the second substrate 12. The first substrate 11 and the second substrate 12 are made of a light transmissive material, and are, for example, a glass substrate, a quartz substrate or a plastic substrate, and are not limited thereto. In addition, the liquid crystal display panel 1 further includes a pixel array (not shown), the pixel array is disposed between the first substrate 11 and the second substrate 12, and the pixel array includes at least one pixel (or sub-pixel) P. Here, the plural pixel P is taken as an example (FIG. 1A shows only one pixel P), and the pixels P are arranged in a matrix. In addition, this The liquid crystal display panel 1 of the embodiment may further include a plurality of scan lines (not shown) and a plurality of data lines D. The scan lines and the data lines D are staggered, and are substantially perpendicular to each other to define the pixels. The area of P. As described above, the extending direction of the data line D of the present embodiment is substantially parallel to the first direction D1, and the extending direction of the scanning line is substantially parallel to the second direction D2.
本實施例之畫素P除了包含夾置於第一基板11與第二基板12之間的液晶層13之外,更包含一第一電極141、一鈍化層142、一第二電極143、一平坦層144、一層間介電層(Inter-Layer Dielectric,Layer)145及一緩衝層146。其中,緩衝層146、層間介電層145、平坦層144、第二電極143、鈍化層142及第一電極141係由下而上依序形成於第一基板11面向第二基板12之一側上。 In addition to the liquid crystal layer 13 sandwiched between the first substrate 11 and the second substrate 12, the pixel P of the present embodiment further includes a first electrode 141, a passivation layer 142, a second electrode 143, and a A flat layer 144, an inter-Layer Dielectric layer (Layer) 145, and a buffer layer 146. The buffer layer 146, the interlayer dielectric layer 145, the planarization layer 144, the second electrode 143, the passivation layer 142, and the first electrode 141 are sequentially formed from the bottom to the top on the side of the first substrate 11 facing the second substrate 12. on.
緩衝層146設置於第一基板11上,而層間介電層145覆蓋於緩衝層146上。兩相鄰資料線D設置於層間介電層145上,並位於畫素P的兩側,且平坦層144覆蓋資料線D,而第二電極143設置於平坦層144上。另外,鈍化層142覆蓋在第二電極143上,且第一電極141設置於鈍化層142上,使得第二電極143可夾置於鈍化層142與平坦層144之間,且鈍化層142夾置於第一電極141及第二電極143之間,避免第二電極143與第一電極141產生短路。其中,鈍化層142、平坦層144、層間介電層145及緩衝層146的材質可例如但不限於包含氧化矽(SiOx)或氮化矽(SiNx),或其它絕緣材質,而第一電極141及第二電極143分別為一透明導電層,且其材料例如但不限於為銦錫氧化物(Indium-tin Oxide,ITO)或銦鋅氧化物(Indium-zinc Oxide,IZO)。在本實施例中,第一電極141為一畫素電極(Pixel Electrode),並與資料線D電性連接(圖未顯示),而第二電極143為一共同電極(Common Electrode)。於此實施例中,由於第二電極143為整層結構而覆蓋在平坦層144及資料線D上,因此,兩相鄰的資料線D因驅動電壓的不同所產生的電場會被整層的第二電極(共同電極)143所遮蔽,不會影響到第一電極141(畫素電極)的運作。較佳者,第二電極143的面積係大於第一電極141的面積。在不同的實施例中,第一電極141也可為共同電極,而第二電極143也可為畫素電極。 The buffer layer 146 is disposed on the first substrate 11, and the interlayer dielectric layer 145 is over the buffer layer 146. Two adjacent data lines D are disposed on the interlayer dielectric layer 145 and are located on both sides of the pixel P, and the flat layer 144 covers the data line D, and the second electrode 143 is disposed on the flat layer 144. In addition, the passivation layer 142 is overlaid on the second electrode 143, and the first electrode 141 is disposed on the passivation layer 142 such that the second electrode 143 can be sandwiched between the passivation layer 142 and the planarization layer 144, and the passivation layer 142 is interposed. Between the first electrode 141 and the second electrode 143, the second electrode 143 and the first electrode 141 are prevented from being short-circuited. The material of the passivation layer 142, the planarization layer 144, the interlayer dielectric layer 145, and the buffer layer 146 may be, for example but not limited to, yttrium oxide (SiOx) or tantalum nitride (SiNx), or other insulating materials, and the first electrode 141. And the second electrode 143 is a transparent conductive layer, and the material thereof is, for example but not limited to, Indium-tin Oxide (ITO) or Indium-zinc Oxide (IZO). In this embodiment, the first electrode 141 is a pixel electrode and is electrically connected to the data line D (not shown), and the second electrode 143 is a common electrode (Common Electrode). In this embodiment, since the second electrode 143 is covered by the flat layer 144 and the data line D as a whole layer structure, the electric field generated by the difference between the driving voltages of the two adjacent data lines D is layered. The second electrode (common electrode) 143 is shielded from the operation of the first electrode 141 (pixel electrode). Preferably, the area of the second electrode 143 is larger than the area of the first electrode 141. In different embodiments, the first electrode 141 may also be a common electrode, and the second electrode 143 may also be a pixel electrode.
另外,畫素P更可包括一黑色矩陣層BM及一濾光層147, 黑色矩陣層BM設置於第一基板11與第二基板之間12,且與資料線D對應設置。黑色矩陣層BM為不透光材質,例如為金屬或樹脂,而金屬例如可為鉻、氧化鉻或氮氧鉻化合物。在本實施例中,黑色矩陣層BM設置於第二基板12面對第一基板11之一側,並位於資料線D沿第一方向D1的上方,故俯視液晶顯示面板1時,黑色矩陣層BM可遮蔽資料線D。由於黑色矩陣層BM為不透光材質,因此於第二基板12上可形成不透光的區域,進而界定出可透光的區域(即為濾光層147的設置區域)。濾光層147設置於第二基板12面對第一基板11之一側上,或設置於第一基板11上。本實施例之黑色矩陣層BM與濾光層147分別設置於第二基板12上,且濾光層147位於相鄰的黑色矩陣層BM之間。在不同的實施態樣中,黑色矩陣層BM或濾光層147也可分別設置於第一基板11上,使其成為一BOA(BM on Array)基板,或成為一COA(Color Filter on Array)基板,並不限制。 In addition, the pixel P may further include a black matrix layer BM and a filter layer 147. The black matrix layer BM is disposed between the first substrate 11 and the second substrate 12 and is disposed corresponding to the data line D. The black matrix layer BM is an opaque material such as a metal or a resin, and the metal may be, for example, a chromium, a chromium oxide or a oxynitride compound. In this embodiment, the black matrix layer BM is disposed on one side of the second substrate 12 facing the first substrate 11 and located above the first direction D1 of the data line D. Therefore, when the liquid crystal display panel 1 is viewed from above, the black matrix layer is disposed. The BM can shield the data line D. Since the black matrix layer BM is an opaque material, an opaque region can be formed on the second substrate 12, thereby defining a permeable region (ie, a region in which the filter layer 147 is disposed). The filter layer 147 is disposed on one side of the second substrate 12 facing the first substrate 11 or on the first substrate 11 . The black matrix layer BM and the filter layer 147 of the present embodiment are respectively disposed on the second substrate 12, and the filter layer 147 is located between the adjacent black matrix layers BM. In different embodiments, the black matrix layer BM or the filter layer 147 may be respectively disposed on the first substrate 11 to be a BOA (BM on Array) substrate, or may be a COA (Color Filter on Array). The substrate is not limited.
本實施例之畫素P更可包括一保護層148(例如over-coating),保護層148可覆蓋黑色矩陣層BM及濾光層147。其中,保護層148之材質可為光阻材料、樹脂材料或是無機材料(例如SiOx/SiNx)等,用以保護黑色矩陣層BM及濾光層147不受後續製程的影響而被破壞。此外,畫素P更可包含一配向層151、152。其中,配向層151配置於第一基板11上,並覆蓋第一電極141及鈍化層142,且配向層152配置於第二基板12上,並覆蓋保護層148,而液晶層13係位於配向層151、152之間。 The pixel P of this embodiment may further include a protective layer 148 (eg, over-coating), and the protective layer 148 may cover the black matrix layer BM and the filter layer 147. The material of the protective layer 148 may be a photoresist material, a resin material or an inorganic material (for example, SiOx/SiNx), etc., to protect the black matrix layer BM and the filter layer 147 from being damaged by subsequent processes. In addition, the pixel P may further include an alignment layer 151, 152. The alignment layer 151 is disposed on the first substrate 11 and covers the first electrode 141 and the passivation layer 142. The alignment layer 152 is disposed on the second substrate 12 and covers the protective layer 148, and the liquid crystal layer 13 is located in the alignment layer. Between 151 and 152.
因此,當液晶顯示面板1之該些掃描線接收一掃描訊號時可分別使各掃描線對應之各畫素P的薄膜電晶體(圖未顯示)導通,並將對應每一行畫素P之一資料訊號藉由該些資料線D傳送至對應的該些畫素電極,使液晶顯示面板1可顯示畫面。在本實施例中,過驅動電壓可由各資料線D傳送至各畫素P之第一電極141,使第一電極141與第二電極143之間形成一電場,以驅使液晶層13之液晶分子於第一方向D1與第二方向D2所構成的平面上轉動,進而可調制光線而使液晶顯示面板1顯示影像。 Therefore, when the scan lines of the liquid crystal display panel 1 receive a scan signal, the thin film transistors (not shown) of the respective pixels P corresponding to the scan lines can be respectively turned on, and one of the pixels of each row P is corresponding. The data signals are transmitted to the corresponding pixel electrodes by the data lines D, so that the liquid crystal display panel 1 can display a picture. In this embodiment, the overdrive voltage can be transmitted from each data line D to the first electrode 141 of each pixel P, so that an electric field is formed between the first electrode 141 and the second electrode 143 to drive the liquid crystal molecules of the liquid crystal layer 13. Rotating on a plane formed by the first direction D1 and the second direction D2, the light can be modulated to cause the liquid crystal display panel 1 to display an image.
如圖1B所示,本實施例的第一電極(或簡稱電極)141為線對稱結構而具有一對稱軸L。於此,「線對稱結構」係表示,第一電極141 於對稱軸L兩側的結構為鏡射對稱(即左右對稱)。另外,第一電極141具有至少一條往第一方向D1延伸之長條狀的第一電極部1411。於此,第一電極141係以一條往第一方向D1延伸之第一電極部1411為例,而且第一方向D1亦平行於對稱軸L。其中,第一電極部1411例如為長條狀。另外,本實施例中,第一方向D1與配向層151之配向方向A實質上為平行。其中,「配向方向A」即為配向(Rubbing)製程或光配向製程中在第一基板11上之液晶分子的長軸方向的投影。換言之,本實施例的配向方向A與資料線D的延伸方向實質上平行,並與掃描線的延伸方向(第二方向D2)實質上垂直。不過,因為製程誤差的緣故,本實施例限定對稱軸L與配向層151之配向方向A之間的夾角係小於等於2度(即0°≦夾角≦2°)。在一實施例中,黑色矩陣層BM可覆蓋部分之長條狀的第一電極部1411,藉由可提升穿透率。 As shown in FIG. 1B, the first electrode (or simply referred to as electrode) 141 of the present embodiment has a line symmetry structure and has an axis of symmetry L. Here, the "line symmetrical structure" means that the first electrode 141 The structures on both sides of the symmetry axis L are mirror-symmetrical (ie, bilaterally symmetric). Further, the first electrode 141 has at least one elongated first electrode portion 1411 extending in the first direction D1. Here, the first electrode 141 is exemplified by a first electrode portion 1411 extending in the first direction D1, and the first direction D1 is also parallel to the symmetry axis L. Among them, the first electrode portion 1411 is, for example, elongated. Further, in the present embodiment, the alignment direction A of the first direction D1 and the alignment layer 151 is substantially parallel. Here, the "alignment direction A" is a projection in the long-axis direction of the liquid crystal molecules on the first substrate 11 in the rubbing process or the photo-alignment process. In other words, the alignment direction A of the present embodiment is substantially parallel to the extending direction of the data line D, and is substantially perpendicular to the extending direction of the scanning line (the second direction D2). However, because of the process error, the present embodiment defines that the angle between the axis of symmetry L and the alignment direction A of the alignment layer 151 is less than or equal to 2 degrees (i.e., 0° ≦ 2°). In an embodiment, the black matrix layer BM may cover a portion of the elongated first electrode portion 1411 by increasing the transmittance.
另外,在本實施例中,第一電極部1411具有兩相對側邊L1、L2,且沿第二方向D2上,兩相對側邊L1、L2與相鄰之資料線D(圖1B未顯示)為等距(Equidistant)。另外,該些側邊L1、L2之其中一點的切線方向與對稱軸L之間的夾角(未標示)係介於0度到10度之間(大於0度,且小於10度)。換言之,第一電極部1411雖然為往第一方向D1延伸之長條狀電極,但是其側邊L1、L2並非都與對稱軸L平行(可能有些平行,有些不平行),使得部分側邊L1、L2的切線方向與第一方向D1之間的夾角介於0度到10度之間。藉由這樣的設計,當第一電極141被施加驅動電壓時,液晶分子的轉動速度可以較完全平行的側邊更快。 In addition, in this embodiment, the first electrode portion 1411 has two opposite sides L1, L2, and in the second direction D2, the two opposite sides L1, L2 and the adjacent data line D (not shown in FIG. 1B) Is equidistant (Equidistant). In addition, an angle (not shown) between the tangential direction of one of the side edges L1, L2 and the axis of symmetry L is between 0 degrees and 10 degrees (greater than 0 degrees and less than 10 degrees). In other words, although the first electrode portion 1411 is an elongated electrode extending in the first direction D1, the side edges L1, L2 are not all parallel to the axis of symmetry L (may be somewhat parallel, some are not parallel), so that the partial side L1 The angle between the tangential direction of L2 and the first direction D1 is between 0 and 10 degrees. With such a design, when the driving voltage is applied to the first electrode 141, the liquid crystal molecules can rotate at a faster speed than the completely parallel sides.
另外,本實施例的第一電極141更具有與第一電極部1411連接之一第二電極部1412,且第一方向D1為遠離第二電極部1412的方向。第二電極部1412上具有至少一接觸孔H,且第一電極141係透過接觸孔H與畫素P對應的薄膜電晶體(圖未顯示)電性連接。於此,此薄膜電晶體為畫素P的驅動電晶體,且當薄膜電晶體被導通時,畫素P的灰階電壓會經由薄膜電晶體的源極或汲極傳輸至第一電極141。另外,於第二方向D2上,鄰近第二電極部1412之第一電極部1411具有一第一寬度d1,遠離第二電極部1412之第一電極部1411具有一第二寬度d2,且第一寬度d1大於 或等於第二寬度d2(d1≧d2)。另外,在一實施例中,第一寬度d1可大於第二寬度d2。在另一實施例中,第一寬度d1可等於第二寬度d2。而且當第一寬度d1大於第二寬度d2時,液晶分子的反應速率可比第一寬度d1等於第二寬度d2時快(即液晶分子的反應時間較短)。 In addition, the first electrode 141 of the present embodiment further has a second electrode portion 1412 connected to the first electrode portion 1411, and the first direction D1 is a direction away from the second electrode portion 1412. The second electrode portion 1412 has at least one contact hole H, and the first electrode 141 is electrically connected to the thin film transistor (not shown) corresponding to the pixel P through the contact hole H. Here, the thin film transistor is a driving transistor of the pixel P, and when the thin film transistor is turned on, the gray scale voltage of the pixel P is transmitted to the first electrode 141 via the source or the drain of the thin film transistor. In addition, in the second direction D2, the first electrode portion 1411 adjacent to the second electrode portion 1412 has a first width d1, and the first electrode portion 1411 away from the second electrode portion 1412 has a second width d2, and is first. Width d1 is greater than Or equal to the second width d2 (d1≧d2). Additionally, in an embodiment, the first width d1 may be greater than the second width d2. In another embodiment, the first width d1 may be equal to the second width d2. Moreover, when the first width d1 is greater than the second width d2, the reaction rate of the liquid crystal molecules may be faster than when the first width d1 is equal to the second width d2 (ie, the reaction time of the liquid crystal molecules is shorter).
另外,特別說明的是,本實施例的配向方向A為由接觸孔H往第一電極部1411末端的方向。換言之,若以圖1B之第二方向D2向右側延伸的方向為0度時,本實施例的配向方向A即為逆時鐘往90度延伸之方向(即往圖1B的上側延伸的方向)。因此,第一方向D1與配向方向A的夾角亦小於或等於2度。 Further, in particular, the alignment direction A of the present embodiment is a direction from the contact hole H to the end of the first electrode portion 1411. In other words, when the direction extending to the right side in the second direction D2 of FIG. 1B is 0 degrees, the alignment direction A of the present embodiment is a direction in which the counterclockwise extends toward 90 degrees (that is, a direction extending toward the upper side of FIG. 1B). Therefore, the angle between the first direction D1 and the alignment direction A is also less than or equal to 2 degrees.
請參照圖1C及圖1D所示,其分別為畫素P於不施加驅動電壓及施加驅動電壓時,液晶分子相對於圖1B之第一電極141的轉動示意圖。 Please refer to FIG. 1C and FIG. 1D , which are schematic diagrams of the rotation of the liquid crystal molecules with respect to the first electrode 141 of FIG. 1B when the pixel P is not applied with a driving voltage and a driving voltage is applied.
由圖1D可發現,在施加過驅動電壓的情況下,液晶分子的轉動於對稱軸L的兩側為鏡射對稱,而且透過實驗證明,當以延伸過驅動電壓驅動時,畫素P並不會出現額外的暗紋而影響穿透率。 It can be found from FIG. 1D that, in the case where an overdrive voltage is applied, the rotation of the liquid crystal molecules is mirror-symmetric on both sides of the symmetry axis L, and it has been experimentally proved that the pixel P is not driven when the driving voltage is extended. Additional dark lines appear and affect penetration.
另外,由本實施例之畫素P的設計所得到的實驗結果來看,若液晶分子沒有預傾角(Pre-tilt Angle),則畫素P可能產生額外的暗紋而使其穿透率降低。因此,本實施例之液晶分子的預傾角較佳為大於0度且小於5度。換言之,請參照圖1E所示,其為一實施例之液晶分子的預傾示意圖。其中,第三方向D3係平行於第一基板11的一法線方向,且第一基板11的法線方向與液晶分子的長軸方向D4的夾角θ需大於85度且小於90度(85°<θ<90°)。藉此,當畫素P之第一電極141被過驅動時,不會產生額外的暗紋而使穿透率降低。 Further, from the experimental results obtained by the design of the pixel P of the present embodiment, if the liquid crystal molecules have no Pre-tilt Angle, the pixel P may generate additional dark lines to lower the transmittance. Therefore, the pretilt angle of the liquid crystal molecules of the present embodiment is preferably greater than 0 degrees and less than 5 degrees. In other words, please refer to FIG. 1E, which is a pre-tilt schematic diagram of liquid crystal molecules of an embodiment. The third direction D3 is parallel to a normal direction of the first substrate 11, and the angle θ between the normal direction of the first substrate 11 and the long-axis direction D4 of the liquid crystal molecules needs to be greater than 85 degrees and less than 90 degrees (85°). <θ<90°). Thereby, when the first electrode 141 of the pixel P is overdriven, no additional dark lines are generated and the transmittance is lowered.
另外,請參照圖2A至圖2C所示,其中,圖2A為本實施例不同實施態樣之第一電極141的示意圖,而圖2B及圖2C分別為畫素不施加驅動電壓及施加驅動電壓時,液晶分子相對於圖2A之第一電極141的轉動示意圖。 2A to 2C, wherein FIG. 2A is a schematic diagram of the first electrode 141 according to different embodiments of the embodiment, and FIG. 2B and FIG. 2C respectively show that the pixel does not apply a driving voltage and apply a driving voltage. At the time, the liquid crystal molecules are rotated relative to the first electrode 141 of FIG. 2A.
與圖1B之第一電極141主要的不同在於,圖2A之第一電極141具有二條第一電極部1411及與該些第一電極部1411連接之一第二 電極部1412。其中,該些第一電極部1411例如為長條狀。另外,對稱軸L與配向層151的配向方向A之間的夾角係小於或等於2度(0°≦夾角≦2°),而本實施例之配向方向A係由第一電極部1411的末端往接觸孔H的方向,故第一方向D1與配向層151之配向方向A之間的夾角係介於178度與182度之間。換言之,若以圖2A之第二方向D2向右側延伸的方向為0度時,本實施例的配向方向A較佳者即為逆時鐘往270度延伸之方向(即往圖2A的下側延伸的方向)。其原因是,若配向方向A為逆時鐘往90度延伸的方向時,經由實驗證明,在第一電極141具有二條第一電極部1411的設計之下,畫素會出現額外的暗紋。 The main difference from the first electrode 141 of FIG. 1B is that the first electrode 141 of FIG. 2A has two first electrode portions 1411 and one second connected to the first electrode portions 1411. Electrode portion 1412. The first electrode portions 1411 are, for example, elongated. Further, the angle between the axis of symmetry L and the alignment direction A of the alignment layer 151 is less than or equal to 2 degrees (0°≦ angle ≦2°), and the alignment direction A of the present embodiment is the end of the first electrode portion 1411. In the direction of the contact hole H, the angle between the first direction D1 and the alignment direction A of the alignment layer 151 is between 178 and 182 degrees. In other words, if the direction extending to the right side in the second direction D2 of FIG. 2A is 0 degrees, the alignment direction A of the present embodiment is preferably a direction in which the counterclockwise extends toward 270 degrees (ie, extends to the lower side of FIG. 2A). Direction). The reason for this is that if the alignment direction A is a direction in which the counterclockwise direction is extended by 90 degrees, it has been experimentally confirmed that under the design that the first electrode 141 has two first electrode portions 1411, additional dark lines appear on the pixels.
另外,在本實施態樣中,兩相鄰該些第一電極部1411靠近第二電極部1412的部分的間距d3係小於其遠離第二電極部1412的部分的間距d4(第一電極141呈現U形或V形外擴)。換言之,離接觸孔H越遠的該些第一電極部1411,於第二方向D2上,其間距越遠。此外,該些第一電極部1411雖然為往第一方向D1延伸之長條狀電極,但是鄰近彼此的側邊並非都與第一方向D1平行。其中,該些第一電極部1411的其中之一具有兩相對側邊,且於該些相對側邊中,遠離對稱軸L之側邊係實質上平行配向方向A。換言之,本實施例之第一電極141的內側側邊(鄰近對稱軸L之側邊)與對稱軸L之間的夾角可介於0度到10度之間(未標示),而第一電極141的外側側邊(遠離對稱軸L之側邊)係實質上係平行於配向方向A。 In addition, in the embodiment, the distance d3 between the portions of the two adjacent first electrode portions 1411 adjacent to the second electrode portion 1412 is smaller than the distance d4 of the portion away from the second electrode portion 1412 (the first electrode 141 is presented) U-shaped or V-shaped external expansion). In other words, the further away from the contact holes H, the further the pitch of the first electrode portions 1411 in the second direction D2. Further, although the first electrode portions 1411 are elongated electrodes extending in the first direction D1, the sides adjacent to each other are not all parallel to the first direction D1. The one of the first electrode portions 1411 has two opposite sides, and among the opposite sides, the side away from the axis of symmetry L is substantially parallel to the alignment direction A. In other words, the angle between the inner side of the first electrode 141 of the present embodiment (the side adjacent to the axis of symmetry L) and the axis of symmetry L may be between 0 degrees and 10 degrees (not shown), and the first electrode The outer side of the 141 (the side away from the axis of symmetry L) is substantially parallel to the direction of alignment A.
請參照圖3所示,其為一實施例中,畫素的驅動電壓改變時,液晶分子切換時間的示意圖。 Please refer to FIG. 3, which is a schematic diagram of switching timing of liquid crystal molecules when the driving voltage of the pixel is changed in an embodiment.
在本實施例中,畫素的穿透率最大時的驅動電壓為4伏特(V)。因此,當驅動電壓超過4V(White Voltage)時即為延伸過驅動電壓(extended overdrive voltage)。如圖3所示,驅動電壓例如由初始狀態0V改變至7V(大於4V)時,液晶分子的切換時間明顯地比由0V變化到4V時短,而且即使到達7V時,由實驗證明,畫素的液晶分子也不會有異常排列的現象(沒有Disclination),因此,不會產生額外的暗紋而使面板的穿透率下降。藉此,當顯示面板(液晶分子)具有快速反應時間時,其邊際效應 (較低穿透率)會被消除。 In the present embodiment, the driving voltage at the time of the maximum transmittance of the pixel is 4 volts (V). Therefore, when the driving voltage exceeds 4V (White Voltage), it is an extended overdrive voltage. As shown in FIG. 3, when the driving voltage is changed from the initial state 0V to 7V (greater than 4V), for example, the switching time of the liquid crystal molecules is significantly shorter than when changing from 0V to 4V, and even when it reaches 7V, it is experimentally proved that the pixel is There is no abnormal alignment of liquid crystal molecules (no Disclination), so no additional dark lines are generated and the transmittance of the panel is lowered. Thereby, when the display panel (liquid crystal molecules) has a fast reaction time, its marginal effect (lower penetration rate) will be eliminated.
另外,請參照圖4,其為本發明另一實施例之液晶顯示面板1a的剖視示意圖。 In addition, please refer to FIG. 4, which is a cross-sectional view of a liquid crystal display panel 1a according to another embodiment of the present invention.
在本實施例中,液晶顯示面板1a之畫素Pa的第一電極141a一樣為線對稱結構,且第一電極部1411延伸的第一方向D1與配向層151之配向方向A實質上為平行。 In the present embodiment, the first electrode 141a of the pixel Pa of the liquid crystal display panel 1a has a line symmetrical structure, and the first direction D1 in which the first electrode portion 1411 extends and the alignment direction A of the alignment layer 151 are substantially parallel.
另外,本實施例之液晶顯示面板1a與圖1A之液晶顯示面板1主要的不同在於,液晶顯示面板1a之畫素Pa的第一電極141a為共同電極,而第二電極143a為畫素電極。 Further, the liquid crystal display panel 1a of the present embodiment is mainly different from the liquid crystal display panel 1 of FIG. 1A in that the first electrode 141a of the pixel Pa of the liquid crystal display panel 1a is a common electrode, and the second electrode 143a is a pixel electrode.
此外,液晶顯示面板1a的其它特徵可對應參照上述之液晶顯示面板1,不再贅述。 In addition, other features of the liquid crystal display panel 1a may be referred to the above-described liquid crystal display panel 1 and will not be described again.
另外,請參照圖5所示,其為本發明較佳實施例之一種液晶顯示裝置2的示意圖。 In addition, please refer to FIG. 5, which is a schematic diagram of a liquid crystal display device 2 according to a preferred embodiment of the present invention.
液晶顯示裝置2包括一液晶顯示面板3以及一背光模組4(Backlight Module),液晶顯示面板3與背光模組4相對設置。其中,液晶顯示面板3可為上述之液晶顯示面板1、1a的其中之一,或其變化態樣,於此不再多作說明。當背光模組4發出的光線E穿過液晶顯示面板3時,可透過液晶顯示面板3之各畫素顯示色彩而形成影像。 The liquid crystal display device 2 includes a liquid crystal display panel 3 and a backlight module 4 (Backlight Module). The liquid crystal display panel 3 is disposed opposite to the backlight module 4. The liquid crystal display panel 3 may be one of the liquid crystal display panels 1 and 1a described above, or a variation thereof, and will not be further described herein. When the light E emitted from the backlight module 4 passes through the liquid crystal display panel 3, the pixels of the liquid crystal display panel 3 can display colors to form an image.
綜上所述,因本發明之液晶顯示面板中,畫素配置於第一基板與第二基板之間,並具有一配向層及一第一電極,而配向層設置於第一基板上,第一電極設置於第一基板上,且第一電極為線對稱結構並具有一對稱軸。另外,第一電極具有至少一往第一方向延伸之第一電極部,且第一電極的對稱軸與配向層之配向方向之間的夾角係小於等於2度。藉由畫素的電極結構以及第一電極之第一電極部與配向層之配向方向的關係,使得液晶顯示面板操作於過驅動技術,特別在一延伸過驅動(extended overdrive)技術時,畫素不會有額外的暗紋產生而使穿透率下降。因此,本發明之液晶顯示面板可在不降低穿透率的情況下加快液晶分子的反應速度而降低切換時間,進而改善動態殘影問題而提高顯示品質。 In the liquid crystal display panel of the present invention, the pixel is disposed between the first substrate and the second substrate, and has an alignment layer and a first electrode, and the alignment layer is disposed on the first substrate. An electrode is disposed on the first substrate, and the first electrode has a line symmetrical structure and has an axis of symmetry. In addition, the first electrode has at least one first electrode portion extending in the first direction, and an angle between the axis of symmetry of the first electrode and the alignment direction of the alignment layer is 2 degrees or less. By the electrode structure of the pixel and the relationship between the alignment direction of the first electrode portion of the first electrode and the alignment layer, the liquid crystal display panel is operated by overdrive technology, especially in an extended overdrive technology. There is no additional dark streaks and the penetration rate is reduced. Therefore, the liquid crystal display panel of the present invention can speed up the switching speed of the liquid crystal molecules without lowering the transmittance, thereby reducing the switching time, thereby improving the dynamic image sticking problem and improving the display quality.
以上所述僅為舉例性,而非為限制性者。任何未脫離本發明 之精神與範疇,而對其進行之等效修改或變更,均應包含於後附之申請專利範圍中。 The above is intended to be illustrative only and not limiting. Any without departing from the invention The spirit and scope of the invention, and equivalent modifications or alterations thereto, shall be included in the scope of the appended patent application.
141‧‧‧第一電極 141‧‧‧First electrode
1411‧‧‧第一電極部 1411‧‧‧First electrode
1412‧‧‧第二電極部 1412‧‧‧Second electrode
A‧‧‧配向方向 A‧‧‧ alignment direction
d1‧‧‧第一寬度 D1‧‧‧first width
d2‧‧‧第二寬度 D2‧‧‧ second width
D1‧‧‧第一方向 D1‧‧‧ first direction
D2‧‧‧第二方向 D2‧‧‧ second direction
D3‧‧‧第三方向 D3‧‧‧ third direction
H‧‧‧接觸孔 H‧‧‧Contact hole
L‧‧‧對稱軸 L‧‧‧ axis of symmetry
L1、L2‧‧‧側邊 L1, L2‧‧‧ side
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JP5839541B2 (en) * | 2011-05-13 | 2016-01-06 | 富士フイルム株式会社 | Conductive sheet and touch panel |
WO2013014883A1 (en) * | 2011-07-25 | 2013-01-31 | パナソニック株式会社 | Display device |
JP5647955B2 (en) * | 2011-08-24 | 2015-01-07 | 株式会社ジャパンディスプレイ | Liquid crystal display |
WO2014021225A1 (en) * | 2012-08-02 | 2014-02-06 | シャープ株式会社 | Touch panel substrate and display device |
KR101997745B1 (en) * | 2013-01-25 | 2019-07-09 | 삼성디스플레이 주식회사 | Liquid crystal display |
CN104103647B (en) * | 2014-07-08 | 2017-02-15 | 京东方科技集团股份有限公司 | Array substrate, preparation method and touch control display device |
CN204009302U (en) * | 2014-07-30 | 2014-12-10 | 群创光电股份有限公司 | Display panel and display device |
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- 2015-01-30 US US14/610,596 patent/US20160225347A1/en not_active Abandoned
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TW201224611A (en) * | 2010-11-29 | 2012-06-16 | Stanley Electric Co Ltd | Liquid crystal element, liquid crystal display |
TW201533511A (en) * | 2014-02-26 | 2015-09-01 | Au Optronics Corp | Display panel |
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US20160225347A1 (en) | 2016-08-04 |
TW201627735A (en) | 2016-08-01 |
CN105842936A (en) | 2016-08-10 |
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